CMM Plumbing LLC proudly offers a 2-year warranty on labor for all completed work.
Toilet Repair You Can Count On
A toilet that runs constantly, flushes weakly, or clogs more often than it should isn't just annoying — it can waste hundreds of gallons of water a month and signal a bigger problem underneath. At CMM Plumbing, our licensed plumbers diagnose the actual cause instead of just swapping parts and hoping for the best. Whether it's a simple internal component or something tied to your drain line, we get it fixed right the first time. We've been serving Coupland, Austin, and Central Texas homeowners for 20-plus years, and toilet repair is one of the most common calls we run.
Common Toilet Problems We Fix
Toilets are simple fixtures with a lot of moving parts, and most issues fall into a handful of categories. Here's what we see most often:
- Running toilets from a worn flapper, fill valve, or misaligned fill tube
- Weak or incomplete flushes caused by a clogged trapway, low tank water level, or a failing flush valve
- Frequent clogs that may point to a partial blockage or venting issue beyond the bowl itself
- Toilets that rock, wobble, or leak at the base from a worn wax ring or cracked flange
- Handle problems, chain issues, and tanks that won't fill or won't stop filling
- Cracks in the tank or bowl that require full replacement rather than repair
Some of these are quick fixes. Others — especially recurring clogs or leaks at the base — can be a sign of a deeper drain issue that needs a closer look before we touch the toilet itself.

Repair vs. Replace: How We Help You Decide
Not every toilet problem calls for a new toilet, and we won't sell you one you don't need. During our inspection, we check the internal components, the seal at the base, the condition of the bowl and tank, and how the toilet is performing overall. If it's a matter of replacing a flapper, fill valve, or wax ring, a repair gets you back to normal for a fraction of the cost of a new unit. But if the toilet is old, inefficient, cracked, or you're already updating the bathroom, installing a new toilet is often the more practical long-term choice — especially if you're working with us on a broader bathroom remodel. Either way, we'll explain what we found and what your options are before any work begins.
Our Toilet Installation Process
Installing a toilet looks simple, but done poorly it leads to leaks, rocking, and floor damage down the road. Our process is built to prevent that:
- Remove the old toilet and inspect the flange and closet bolts for damage or corrosion
- Set a new wax ring or seal to create a watertight connection to the drain
- Level and secure the new toilet so it doesn't rock or shift over time
- Connect the water supply line and test the fill valve, flush valve, and shutoff
- Run a full flush test and check for leaks at the base and supply connection before we leave
We take the same care whether we're installing a single replacement toilet or fixtures for a new construction project, so you don't have to worry about a callback for a leak we should have caught.
Why Choose CMM Plumbing for Toilet Repair
- Licensed and Experienced: Our team holds a Master Plumbing License #46268, with more than 20 years of hands-on plumbing experience across Central Texas. Learn more about CMM Plumbing.
- Accurate Diagnosis: We identify the actual cause of the problem before recommending a repair or replacement, so you're not paying for guesswork.
- Careful Installation: Every toilet we install is leveled, sealed, and tested for leaks before we consider the job finished.
- Honest Communication: We explain what we find in plain terms and give you real options, not upsells.
If you're dealing with a running toilet, a weak flush, or you're ready to install a new one, CMM Plumbing is the trusted local plumber for toilet repair and installation in Coupland, Austin, and the surrounding areas. Contact us today to schedule your service.
Frequently Asked Questions About Toilet Repair
Why does my toilet keep running after it's flushed?
A running toilet is almost always caused by a worn flapper, an improperly adjusted fill valve, or a fill tube that's out of position. These are inexpensive parts, but if they're not diagnosed and replaced correctly the toilet will keep wasting water and the problem will come back.
How do I know if I need a repair or a full replacement?
If your toilet is a few years old and the tank, bowl, and base are all in good shape, a repair to the internal components is usually enough. If the toilet is old, cracked, rocks on the floor, or you're renovating the bathroom anyway, replacement is often the better long-term investment. We'll give you an honest recommendation after inspecting it.
Why does my toilet clog so often?
Frequent clogs can point to a partial blockage in the drain line, low flush pressure from an aging toilet, or a vent issue affecting how the fixture drains. If a plunger only helps temporarily, it's worth having a plumber check whether the problem is in the toilet itself or further down the line.
Do you install customer-supplied toilets?
Yes. We're happy to install a toilet you've purchased yourself, or help you select one that fits your bathroom and budget. Either way, we make sure it's set, sealed, and connected correctly to prevent leaks.
How long does a toilet installation take?
A standard toilet installation or replacement is typically completed in about an hour. If we run into an issue with the flange, shutoff valve, or flooring underneath, we'll walk you through what's needed before moving forward.
Available at These Locations
We provide this service throughout Coupland, Austin, and Central Texas, including:
